public IEnumerator DFSsolve()
{
Stack <tile> waiting = new Stack <tile>();
waiting.Push(start);
visited.Add(start);
bool found = false;
while (waiting.Count != 0)
{
yield return(new WaitForSeconds(0.1f));
tile cur = waiting.Pop();
if (!cur.isStart() && !cur.isGoals())
{
cur.spriteRenderer.color = Color.cyan;
}
if (cur.isGoals())
{
found = true;
break;
}
List <tile> neighbors = field.GetNeighbor(cur);
foreach (tile t in neighbors)
{
if (!visited.Contains(t) && (t.isWalkable() || t.isGoals()))
{
waiting.Push(t);
t.prev = cur;
}
visited.Add(cur);
}
}
if (found)
{
tile c = end;
while (c.prev != null)
{
c = c.prev;
if (!c.isGoals() && !c.isStart())
{
c.spriteRenderer.color = Color.green;
}
}
//c.spriteRenderer.color = Color.green;
}
else
{
Debug.Log("solution not found");
}
}
void Update()
{
if (Input.GetMouseButton(0))
{
if (EventSystem.current.IsPointerOverGameObject())
{
return;
}
Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
tile curTile = GetTile(Mathf.RoundToInt(mousePos.x), Mathf.RoundToInt(mousePos.y));
if (curTile != null)
{
// Debug.Log(curTile.getPos());
SpriteRenderer sprt = curTile.obj.GetComponent <SpriteRenderer>();
curTile.setState(state);
if (curTile.isGoals())
{
end = curTile;
curTile.spriteRenderer.color = Color.green;
}
else if (curTile.isStart())
{
start = curTile;
curTile.spriteRenderer.color = Color.red;
}
else if (curTile.isWalkable())
{
curTile.spriteRenderer.color = Color.white;
}
else
{
curTile.spriteRenderer.color = Color.black;
}
Debug.Log(state);
}
}
if (Input.GetMouseButton(2))
{
Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
tile curTile = GetTile(Mathf.RoundToInt(mousePos.x), Mathf.RoundToInt(mousePos.y));
if (curTile != null)
{
Debug.Log(curTile.state);
Debug.Log(curTile.isGoals());
}
}
if (SolveType)
{
TypeText.text = "Depth First Search";
}
else
{
TypeText.text = "Breath First Search";
}
}